using ServerCommon;
using ServerCore; using ServerBase;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MetaAssets;

namespace GameServer;

public class DBQAbandonQuest : QueryExecutorBase
{
    private string m_my_combination_key_for_pk = string.Empty;
    private string m_my_combination_key_for_sk = string.Empty;
    private UInt32 m_quest_id = 0;
    private UInt32 m_quest_revision = 0;

    private QuestDoc? m_quest_doc_nullable = null;

    private string m_pk = string.Empty;
    private string m_sk = string.Empty;

    public DBQAbandonQuest(string myGuid, UInt32 questId, UInt32 questRevision) 
        : base(typeof(DBQAbandonQuest).Name)
    {
        m_my_combination_key_for_pk = myGuid;
        m_quest_id = questId;
        m_quest_revision = questRevision;
        m_my_combination_key_for_sk = QuestDoc.makeQuestSKString(m_quest_id, m_quest_revision);
    }

    //===================================================================================================
    // DB 쿼리 직전에 준비해야 할 로직들을 작성한다.
    //===================================================================================================
    public override Task<Result> onPrepareQuery()
    {
        var result = new Result();
        
        m_quest_doc_nullable = new QuestDoc(m_my_combination_key_for_pk, m_quest_id, m_quest_revision);
        m_quest_doc_nullable.setCombinationKeyForPKSK(m_my_combination_key_for_pk, m_my_combination_key_for_sk);
        
        var error_code = m_quest_doc_nullable.onApplyPKSK();
        if (error_code.isFail())
        {
            var err_msg = $"Failed to onApplyPKSK() !!! my_error_code : {error_code.toBasicString()}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(err_msg);
            return Task.FromResult(result);
        }

        m_pk = m_quest_doc_nullable.getPK();
        m_sk = m_quest_doc_nullable.getSK();

        return Task.FromResult(result);
    }


    //===================================================================================================
    // onPrepareQuery()를 성공할 경우 호출된다.
    //===================================================================================================
    public override async Task<Result> onQuery()
    {
        NullReferenceCheckHelper.throwIfNull(m_quest_doc_nullable, () => $"m_quest_doc_nullable is null !!!");

        var result = new Result();

        var query_batch = getQueryBatch();
        NullReferenceCheckHelper.throwIfNull(query_batch, () => $"query_batch is null !!!");

        var db_connector = query_batch.getDynamoDbConnector();

        (result, var quest_doc) = await m_quest_doc_nullable.onCopyToDocument();
        if (result.isFail())
        {
            var err_msg = $"Failed to m_quest_doc_nullable.onCopyToDocument() !!! : {result.toBasicString()}, m_my_pk:{m_pk}, m_sk:{m_sk} - {toBasicString()}";
            Log.getLogger().error(err_msg);
            return result;
        }

        var table = db_connector.getTableByDoc<QuestDoc>();
        await table.simpleDeleteDocumentsWithBatchWrite([quest_doc], query_batch.getTransId());

        return result;
    }


    //===================================================================================================
    // DB 쿼리를 성공하고, doFnCommit()가 QueryResultType.NotCalledQueryFunc를 반환할 경우 호출된다.
    //===================================================================================================
    public override async Task onQueryResponseCommit()
    {
        //여기서 메모리 업데이트
        var owner = getOwner();
        NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");

        var quest_action = owner.getEntityAction<QuestAction>();
        NullReferenceCheckHelper.throwIfNull(quest_action, () => $"quest_action is null !!!");

        //이거 안필요 할 수 도 잇다. (다시 바꿔보자..)
        (var result, var quest_meta_all_base_info) = await QuestMetaManager.It.getQuestMeta(m_quest_id);
        if (result.isFail()) return;
        
        var quest_base_info = quest_meta_all_base_info.m_quest_base_info;
        if (quest_base_info == null)
            return;
        
        var quest_type = EnumHelper.convertEnumTypeAndValueStringToEnum(quest_base_info.QuestType, EQuestType.NORMAL);
        quest_action.deleteQuest(quest_type, m_quest_id);

        return;
    }


    //===================================================================================================
    // DB 쿼리를 실패하고, doFnRollback()가 QueryResultType.NotCalledQueryFunc를 반환할 경우 호출된다.
    //===================================================================================================
    public override Task onQueryResponseRollback(Result errorResult)
    {
        return Task.CompletedTask;
    }

    private new Player? getOwner() => getQueryBatch()?.getLogActor() as Player;
}